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Finding the Fourth Proportional to 54,277.80, 81,397.50 and 25,811.40

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Solution

The fourth proportional to 54,277.80, 81,397.50 and 25,811.40 is: 38,707.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,277.80 : 81,397.50 = 25,811.40 : x
  2. Step 2: Convert to fraction form
    54,277.80/81,397.50 = 25,811.40/x
  3. Step 3: Cross multiply
    54,277.80x = 81,397.50 × 25,811.40
  4. Step 4: Simplify right side
    54,277.80x = 2,100,983,431.50
  5. Step 5: Solve for x
    x = 2,100,983,431.50/54,277.80
  6. Step 6: Final answer
    x = 38,707.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.